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W. OOPLEY 81: H. E HODGSO N. STRAIGHTBNING MACHINE FOR SHAPTING.

. No. 525,003. Patented Aug. 28, 1894.

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UNITED ST TES PATENT OFFICE.

WILLIAM OOPLEY, OF HALIFAX, AND HENRY EDWIN HODGSON, OF CLEOK- HEATON, ENGLAND.

STRA IGHTENING-MACHINE FOR SHAFTING.

SPECIFICATION forming part of Letters Patent No. 525,003, dated August 28, 1894.

Application filed February 15, 1894:. Serial No. 500,317. (No model.) Patented in England September 11, 1891, No. 15,405, and

' April 21, 1892, No. 7,526.

To all whom it may concern.-

Be it known that we, WILLIAM COPLEY, residing at Halifax, and HENRY EDWIN'HODG- SON, residing at Oleckheaton, county of York,"

England, subjects of the Queen of Great Britain, have invented certain new and useful Improvements in Straightening-Machines for Shafting, (patented in Great Britain September 11, 1891, No. 15,405, and April 21,1892,

No. 7,526,) of which the following isa specification. t

This invention pertains to improvements in machines for straightening bar iron preparatory to turning the same to form shafting,

I5 the machine being of course also useful in straightening rough or turned bars designed for other purposes. The machine involves first, a lathe-like machine for supporting and rotating the bar for the detection of the crooks, the rotating force being "yieldingly applied so that the bar may be stopped at any time by the operation of the straightening press or by the operators hand; and second, a straightening press adjustable along 2 5 the length of the bar.

The improvements will be readily understood from the following description taken in connectionwith the accompanying drawings, in which- 1 Figure 1, is a front elevation of a machine embodying our improvements; Fig. 2, anelevation of the rear face of the driving apparatus through which rotary motion is transmitted to the bar; Fig. 3, a vertical diametrical section of this driving apparatus; Fig. 4C, a plan of the locking-key to be employed for positive driving of the bar; Fig. 5, a front view of the straightening press; Fig.6, a side view of the straightening press the back-piece in 40 this view being shown asprovided with horizontal j aw-holding slots, and Fig. 7, a plan of the straightening press.

In the drawingsz-l, indicates the bed of the machine, similar in all general respects to the bed of a lathe; 2, the head-stockthereof,

similar to a lathe; 3, the tail-stock, adj ustable along the bed to suit the length of bar to be dealt with; 4:, the bar to be straightened; 5, the face-plate secured upon the nose of the head-stock spindle in the peculiar manner hereinafter indicated; 6, the straightening press arranged to travel along the bed of the machine andoperate. upon any part of the length of the bar to be straightened; 7, a lathe-dog fast upon the head-stock end of the bar to be straightened; 8, a hub screwed upon the nose of the head-stock spindle, the face-plate .5'turning freely upon this hub; 9, aclip secured to the face-plate 5 and engaging ts inner end in a circumferential groove in hub 8, whereby the face-plate is prevented from endwise motion upon the hub, the clip being removably attached to the face-plate by a screw as shown so that the face-plate may be readily detached from the hub; 10, a key-way half in the hub 8 and half in the bore of the face-plate; 11, a slotted key secured by a screw in the key-way of hub 8 and adapted for endwise adjustment so as to be free from the key-way in the face plate, as seen in Fig. 3, or to be projected forward so as to engage the key-way of the faceplate and lock the face-plate positively to the hub 8; 12, the screw securing the key in the key-way of the hub and, by means of a slot in the key, permitting the endwise adjustment of the key; 13, a friction-pad seated in a forward prolongation of the key-way 10 in the face-plate forward of the end of the keyway in the hub 8, the inner surface of this pad therefore bearing frictionally upon the smooth periphery of hub 8 within the bore of the face-plate; 14, a spring seated in a radial recess in the face plate and pressing inwardly upon the friction-pad; 15, a screw in 8 5 the face-plate bearing against the outer end of the spring and furnishing an adjustable abutment for the spring, whereby the frictional pressure of the pad against hub 8 may be adjusted; 16, the usual driving .stud secured in the face-plate and projecting out wardly to engage the tail of dog 7 in case a dog with a straight tail is employed; 17, a' trolley arranged to run along the ways of the machine; 18, studs projecting from the trol- 5 ley downward between the ways of the machine bed to prevent sidewise displacement of the trolley; 19,. a rectangular frame car ried by the trolley in such position that the bar to be straightened will pass about centoo on the frame; 23,a lever fast with the two screws to rotatein unison; 24,'a backpiece of considerable length disposed within the frame to the rear of bar 4 and having ears threaded upon the'r'ear portions of screws 20; 25, V-shaped die-blocks secured in the front face of back-piece 24 near the ends thereof, being held thereto by flanges engaging vertical T shaped slots in the back-piece; 26,a I front die threaded upon the forward portion of the two screws 20 and disposed vertically in front of bar 4 and midway between th'e die-blocks 25 27, a fixed pointer near one of the gears; frame to the trolley and serving also as means by which vertically to suit'th'e height of centers of dif ferent lathes. j

The head-stock spindle will turn face-plate 5 with a force corresponding with the friction arising from'the pressure of pad 13 and the-spring should be so adjusted in strength that the bar will 'not'be driven with so much force that the operator cannot readily arrest the motion of the bar by holding it his hand.

If lever 23 be turned in one direction the rear die-blocks will move rearwardly and the front die-block will move forwardly,'thus b ecoming entirely free from the shaft in its ro- I tation. If the lever be turned ih'the other direction the dieblocks will forcibly approach the bar '4 a'ndsubject'it to bending strai'n at' the point between'the V-shaped dies.

In using the machine the bar to be straight enedis centered" andprovided with 'a 'dog and put into the'machine and spindle started into rotation, and the rotation of thje'head-stock spindle is not stopped till the work is complete; 'While the bar is rotating the high or outwardly crooked parts marked in the of thebar are detected and usual manner; The rotation of'the bar is then'arrested by the pressure of the machine or theoperators hand upon it and, while the a marked high place to the front, the straightening press is brought bar is thus held, with to the marked point with the front die 26' to the mark. The'lever isthen turned to move" the dies and straighten the crook according to judgment, afterwhich other crooks are The press dealt with in the same manner. ure is then released, thus allowing the bar to again turn for the testing of the work 'and the detection of further crooks,

The operator, upon applying the screwpressure, chal'ksthe gear at pointer 27,'and when thefirst bend has been straightened the last'chalk mark will indicate the proper 21, gears fast 7 w the n n: 22, whereby the turning of the'lever causes and 28, a screw uniting the press-j face-plate carried by the h'e adastock'fspindle,

thepress-frame may be adjusted" the headstock ably arranged to slide freely in their slots in the back piece 24 so as to 'rise and fall with the bends as the pressure is being gently applied. Theoutreach of the back-dies 25 may be increased so as to reach in between cranks in case the machine is'to be used for straightening such articles as loom cranks, and in such case the back-dies should be held in horizontal slots in the back piece 24 (as indi cated in Fig. 6) and have no vertical motion.

We claim as'our inventio'n 1. In a bar straightening machine, the combination, substantially as set forth, of a bed,

a head-stock and tail-stock thereon,"ajstraightening pressadapted to traverse thebed, a

'a 'frictiompad arranged to transmit'rot-aryf motion from the head-stock spindle "td'the face-plate, and an adj usta'ble spring for regu lating the driving force of the friction-pa d,

2. In a bar straightening machine, thecoinbination, substantially asset forth,'o f.a bed, a head-stock and tail-stookthereon, a straightening press adapted to traverse the bed', ja' hub screwed up on'the nose of th e'head stockf pi l a a epl e tedt otate. 1 aid n sj ricti -rad a rie byfth acepl te a b e'r hs p theipe ip ryl said nb, a prii' spr ss sl nwa y poni a ction-pad,and an adjusting screw for regulat ing the pressure of thespring. In a e reight n r s m ch e he v. mbination, substaiit'ially asset forth, of ,a'bed, a head-stock and tail-stock thereon, a straightening press adapted to traverse the "bed, a hub screwed ,upon the nose of thehead-st'o'ck "spindle and provided with aicircum ferential' groove, a face-plate fitted for rotation upon said hub, a clip carried by the facef'p'late and" engagingthe groove of the'hub, a friction-I pad carried by the face-plate and eng the periphery of th hub, and a spring press ing upon said friction-pad.

4. In a bar straightening machine, the combination, substantiallyfas set1fo'rth, of a bed, a head-stock and tail-stock thereon, a straight: ening pressjadaptedtojtraverse the b.ed,'a hub screwed upon the nose of thehead-stbck spindle and provided with a' key-way,a face: plate fitted torotatejuponsaid hubandipro lvidfid t a eyr alv 3 f li i fig y rra g d,

to engage said two key ways and lock"thefafceplate to't'he hub, and a frictionpad and spring locking the face-plate '5, In a bar straightening mablll llie, the com-' binatiomsubstantially as 's'e't f'ort'h, of a bfed,j

' a head stocklaiidf tail stockearried itherebyfl'a face-plate carried by: the headstock'spi ndle, I

a trolley adapted to' travers'eth e bed,a frame supported by'thetrolley,ja pairof back-dies uppb 't df y he ame, av r it'd ejsqpported I yieldingly torts iitb;

by the frame in a vertical plane between the cal plane between the first mentioned dies,

back-dies, and screws geared together and and mechanism connected with the frame and connected with the frame and dies and ardies and arranged to simultaneously move ranged to move the dies in unison. the single die and the pair of dies equally in I 5 5 6. In a bar straightening machine, the comopposite directions.

bination, substantially as set forth, of a bed,

a WILLIAM OOPLEY. a head-stock and tail-stock thereon a faceplate carried by the head-stock spindle, a HENRY EDWIN HODGSON' frame fitted tobe traversed along the bed, a Witnesses: [0 pair of united dies carried by the frame, an E. J. WAKEMAN,

opposing die carried by the frame in a verti- B. POLLARD. 

